grether



.im s, 1929.

J. L. GRETHER HEATING sToV?I Filed March 5, 1923 as to force the discharged products to wall of the stove..

Patented Jan. 8, 1929.

fics.l

JOHN L. GRETHER, OF ST. LOUIS, MISSOURI, ASSIGNOR TO PAUL W.GRETHR, OF ST.

LOUIS, MISSOURI. y

' HEATING STOVE.

'Application 1ed= March-5, 1923. Serial No. 623,042. I

Thisinvention relates to an improvement in heating stoves and has. for its primary object the purpose of vproviding an improved form of discharge passageway for the dis' charge of the products of combustion as they are entrained from the combustion chamber tothe stove pipe or stack.

Another object of the invention is in providing a stove with an improved upper structure. v

A further object of the inventionl is in providing an improved form of discharge passageway for the products of combustion whereby the discharging heated products will be entrained or spread in a manner o t e A still further object ofthe invention is in providing an annular passageway in a stove for the discharged products of combusf tion thereof and to provide a heating chamber interiorly of the annular passageway.

Other and further objects will appear in the specification and -be specifically pointed out in the appended claims, reference being had to the accompanyingdrawings, exemplifying the invention, and in which l Figure lis a 'side .elevation of this 1m'- provement, the upper structure thereof be* ing broken away and shown in section.

Figure' 2 is a vhorizontal section .taken on the line II-II of Fig. l.

With reference to the accompanying drawings, 1 designates the usual ash-pit portion of the stove to the combustion chamber 2 thereof and extending upwardly from said chamber is an annular wall 3, which is secured above the combustion chamber by bolts such as 4.

The wall 3 adjacent its upper end is eX- tended annularly outwardly therearound as designated at 3a and resting on the upper edge 5 of said outward extension is the top portion 6 of a hollow member 7, said lhollow member having a. bottom 8.

The hollow member 7 is smaller in diameter than the outer wall 3, said hollow meinber being depended interiorly of the wall 3 in an eccentric position thereto, thereby 'providing an annular passageway 9 between the wall 3 andthe hollow depending member 7 said annular passageway `9 on account of the eccentric disposition of the hollow member 7 being narrower in width as designated at 10 than is the opposite side of the annular passageway as designated at 11.v4 *From an in?" spection of Fig. 1, it is to be noted that the low member 7 is a heatingv dome or chamber 15 provided with upper end. 4 f v Formed in the voutwardly extending'- wall a small opening at. its

3a is a dischargeopen-ing 17, said openingV being formed adjacent the upper end of the narrowestportion 10i of the annular passzage-l i way 9, and in communication with said opening 17 is a stove pipe or flue 18. r

In the operation of this improved stove, the products of combustion from the burning of fuel within the combustion chamberQ will ascend upwardly into the annular., passageway 9, the bottom 8`ofthe hollow member 7. causing the products of combustion to spread and as they ascend upwardly they'willbeentrained into the annular enlarged passageway 12 from wherev thevproducts of combusf tion will be discharged through the discharge opening 17 to the iiue 18. f

The spreadingof the products-of combusf* tionV as they yascend from the'combustion chamber, andthe entrain-ing of them into the annular passageway 9 provides for the formingl of an annular body of heated products of combustion in which one side of the body of ascending products of combustion .will be forced against the wall 3 whereas the inner side of the annular body of ascending products of combustion will engage the wall 19 of the hollow member 7, said walls 3 and 19 receiving heat from the ascending products of combustion and eXpellingor radiating the heat from the ascending products of combustion. Y

The dividing of the ascendingproducts of combustion into 'an annular formation or body not only forces the heated products against the inner wall of the stove but also provides for the breaking' up of the ascending products of combustion so that the products will not arise in a solid body to the flue as is done by the operation of the ordinary stove, but divides and mingles the unburnt hollow member 7 Vwill be received by the heating chamber 14 from where it will arise and pass through the openings 2O of the ornamental cover 21, said chamber 14 also receiving heat from the dome 15 which extends up,-

kwardly within said chamber.

l'On account of the narrowness of one side of the annular lue 9, designated at 10 and from which the discharge opening 17 of the flue 18 leads, said narrow side 'of the annular flue 9 will not be large enough toaccomm date the draught area from the combustion chamber to the discharge opening 17 therefore said narrow portion oic the annular passageway will cause a draught tofentrain upwardlyv and completely around the annular passageway to the enlarged passageway 12, and after the products of combustion have entered the passageway 12 they will been-l trained transversely around said passageway 12 and dischargeinto the liue 18.

The opening 16 provided in the-top of the dome y15 willperinit a down vdraught. of air to be admitted into said doine,`the down air draught through said opening or duct being introducted to the direct center of the coinbustion chamber thereby further aiding the combustion.

What I claim is :-v

V1. A Stove having a combustion chamber a vertically extending passageway leading from said chamber, and a heating chamber formed interiorly of said passageway in ofi?- set disposition thereto@ 1 `2. A stoye` comprised of a combustion chamber, an router Awall extending upwardly from said chamber, and a hollow member closed at its lower end mounted interiorly of said outer wall in eccentric position thereto, said hollow member being smaller in diameter than the diameter of said outer wall thereby providing an annular passageway `which leads Jfrom said combustion chamber,

said passageway at its upper end terminating into an enlarged annular passageway, and a discharge flue leading Jfrom said enlarged passageway.

3. A stove or the like provided withY an interiorly located member arranged oft-set thereto so as to provide an encircling passageway which rgradually increases in, sizev ltowards a part` 'or the passageway, said pas` sageway extendingupwardly towards the top of the stove, andV a. discharging pipe leading from said vpassageway adjacent the stove-top on the decreased side of saidpassageway.` 4. A stove or the "like provided with a lire.

pot, an unobstructed encircling passageway leading upwardly from said rfire pot, ajdischarging pipe leading from said passageway, said `passage being ot a shape wherein the products of combustion from saidfire pot will be forced thereby to traverse the entire area `ot said encircling passageway whilev the products of. combustion are traveling ,upv wai'dly towards said pipe.

V5: A stove or the like comprising-a heating' chamber, a lire lpot disposed 'beneath said chamber, la wall surrounding' said chamber providing an annular passageway around said'chamber which leads from said fire pot,

`said passageway having a constricted part,

and a discharge .pipeleading from said pasoff. Y v f 6. A stove or the like comprising a heating chamber, ai tire pot disposed beneath 'said chamber, a wall'surrounding said` chamber providing an. annular `passageway around ccf sageway adjacent the constrictedipart theresaid chamber whi'chleads from said irepot, i

said passageway having a constricted'part, and a discharge pipeleading from said pas,-

sageway;

JOHN L. GRETHER. 

